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Trees of Iowa: An Interactive Key

Sandbar Willow
(Salix interior)


Leaves are alternate, simple, long and thin.


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Iowa County Poweshiek County Jasper County Polk County Dallas County Guthrie County Audubon County Marshall County Story County Boone County Greene County Carroll County Washington County Keokuk County Mahaska County Marion County Warren County Madison County Louisa County Muscatine County Adair County Shelby County Crawford County Tama County Benton County Linn County Des Moines County Henry County Jefferson County Wapello County Monroe County Lucas County Clarke County Union County Cass County Adams County Montgomery County Mills County East Pottawattamie County West Pottawattamie County Harrison County Monona County Cedar County Jones County Lee County Van Buren County Davis County Appanoose County Wayne County Decatur County Ringgold County Taylor County Page County Fremont County Scott County Clinton County Jackson County Dubuque County Delaware County Buchanan County Black Hawk County Grundy County Hardin County Hamilton County Webster County Calhoun County Sac County Ida County Woodbury County Clayton County Bremer County Fayette County Chickasaw County Butler County Franklin County Wright County Humboldt County Pocahontas County Buena Vista County Cherokee County Plymouth County Floyd County Cerro Gordo County Hancock County Palo Alto County Clay County O'Brien County Sioux County Allamakee County Winneshiek County Howard County Mitchell County Worth County Winnebago County Kossuth County Emmet County Dickinson County Osceola County Lyon County

This small tree is often shrub like and forms dense thickets on newly formed sand bars. It is common throughout Iowa. The sandbar willow is the pioneer tree on newly formed soils along streams and has a dense, fibrous root system valuable for protecting soil against water cutting.

Hardiness: zones

Growth Rate:


Mature Shape:


Height:


Width:


Site Requirements:


Flowering Dates: Flowers in Spring as leaves first emerge

Seed Dispersal Dates: May - June

Seed Bearing Age: 10 Years

Seed Bearing Frequency: Every year

Seed Stratification:
Sandbar Willow LeavesSandbar Willow Leaves

The leaves are very narrow (1/4 to 3/8 inch) and pointed at both ends, and are more slender than the other willows. They are smooth, yellow-green above, pale beneath and not glossy. The leaves have widely spaced marginal teeth.

Hardiness: zones 2 through 8

Growth Rate:
Extremely fast (3 to 4 feet per year over a 20 year period).

Mature Shape:
Large, low branching tree with long branches and flexible stems that form a broad, open, round-topped crown.

Height:
75 to 100 feet tall

Width:
50 to 100 feet

Site Requirements:
Prefers moist soils and are frequently found along ponds and streams.  Needs full sun.

The brown buds are 1/8 inch long and sharp pointed. The twigs are slender, gray to dark orange and smooth. The fruit is a catkin with light brown capsules 1/4 inch long. The bark is smooth and light gray-brown on young stems. On trunks it is dark gray to brown and smooth or very shallow fissured.

 

Click on a thumbnail image below to view a larger picture.
Sandbar Willow Leaves Sandbar Willow Leaves